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Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …
Does anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ?
Looking at schematics it has to be simple solution, probably king of interleaving, but I could not find any details. -
Joystick Interface with built in RAM expansion?Is there such a thing as a RAM pack with a joystick interface built in?
Is there such a thing as a RAM pack with a joystick interface built in? -
CAT!RAM and PUTRAMLast year sometime I posted a couple of routines to: * catalogue the 128k RAMdisk in BASIC; * move RAMTOP and the stacks from BASIC. CAT!RAM and PUTR…
... from BASIC.
CAT!RAM and PUTRAM are updated versions ... />
As CAT!RAM is in BASIC and is ... swapping around RAM pages to get at ... threshold.
CAT!RAM prints file name & type ...
The listings follow. CAT!RAM will work on any 128k ... -
Lot's of ZX Spectrum parts: RAM chips, ULA's, etcI have new stock of 100% tested parts. I even got my hands on a bunch of ULA's!! [IMG]http://benophetinternet.nl/hobby/sales/parts/IMG_6068.JPG[/IMG…
... ]
Prices:
- Ram chips: 4164, 4532, 4116, etc ... -
Ram test / diagnostic software for 128k?I need a ram test program urgently (as I have to bring this machine into the party place tomorrow) yet I couldn't find any in infoseek by typing "ram…
I need a ram test program urgently (as I ... any in infoseek by typing "ram test" :) And most of the ... .
Are there any ram test suite which runs from ... -
maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …
What is the maximum addressable RAM for a Z80 using bank ... kB) are used as video RAM, but can be used for ... , the additional 64 kB of ram is mapped on pages 248 ... -
PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…
... .JPG[/img]
The paging led is flickering, so there ...
| f17);
// ROM/RAM select (PlusD paged in when ...
+ f17
;ROM/RAM select (PlusD paged in when ... -
Importing binary data to paged memoryI really could use some hint :) Many emulator have a feature - open/ import binary. I select the file, give starting adress and voila ! But most of…
... but 128kB Spectrum has this paging thing and I need to ... all. Could it be a bug?
Any advice - how ... -
Spectrum 128k +2 grey RAMhi all, the manual say that ram ic's should be KM4164B-15P but when i open my spectrum (not repaired by anyone) the ram chips was KM4164B-12 is thi…
... />
the manual say that ram ic's should be KM4164B ... (not repaired by anyone) the ram chips was KM4164B-12
ram?
something else, ... 48k issue 2 zx with RAM chips IC 6-13< ... to remove all the 48k ram chips? it will not ... -
Speccy clearout - GamesI'm having a big clear-out of a lot of Speccy stuff, so part one is the software. (followed by hardware at a later date) If anybody is interested in…
... Off (Software Projects)
Rapscallion (Bug-Byte)
Rockford (M.A ... ! (Incentive - Blue cover)
Strangeloop (Bug-Byte)
Storm Bringer (M ... /> Uridium (Hewson)
Valkyrie 17 (Ram Jam)
Way of the ... -
new esxDOS beta 0.8.4I've made a video of the new esxDOS beta firmware version 0.8.4 kindly sent to me by Phoenix^ra a couple of days ago for testing. The main new featur…
... use OUT (253),X for paging as its only 4 bytes ... loaders which fill the entire RAM in one go.
RAM Diagnostic ROMhi all, i burn this ROM from here [url]http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Interface2_RC_New_RAM_Tester.htm[/url] and i a…
... try to diagnostic a probably RAM fault on my +2 grey ... have some new and old RAM ics KM4164B-12 [B]only ... i can identify the faulty RAM ic?
any tips will ...+2 grey Contended RAMhi all, i have some quenstions about, contended RAM are banks 1,3,5,7 banks are the pairs of IC's (4164), so 1 pairs = 16k X 4 pairs = 64k this 64…
... quenstions about,
contended RAM are banks 1,3,5 ...
now psysical, contended RAM are the IC's on ...SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... a ZX Interface 1 compatible paging mechanism (offering the potential to ... to the Spectrum?s video RAM, with the active display mode ...Bug ridden unreachable levelsThe CTech Kong thread got me thinking. Apparently, there is a third level that a bug prevents you reaching. Are there other examples of unreachable…
The CTech Kong thread got me thinking.
Apparently, there is a third level that a bug prevents you reaching.
Are there other examples of unreachable levels. Am I naive in thinking a hack could make the levels reachable?Beta testing Fuse 1.1.0 beta 2Hello everyone, We are still preparing Fuse for a new release soon and would appreciate help in testing that all the new features and all the old fea…
... support
[*] Plus lots of bug fixes
[/list]
[*] Make sure that SE RAM variables are initialised before they ...ZX81 + 16K RAM PackUp for sale is a ZX81 packaged with power adapter, aerial cable, ear/mic cable and 16K RAM Pack. I hooked it up to the tv and although the power sup…
... , ear/mic cable and 16K RAM Pack.
I hooked ... unable to test the 16K RAM Pack.
ZX81 + Power ... [/IMG]
Complete 16K RAM Pack:
[IMG]http://i629 ...16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…
... based replacement for the lower RAM that works in all 16K ... the column address to the RAM and so there isn't ... that appear on the lower RAM address lines. In particular, in ... is the ZX Spectrum Lower RAM Replacement Module, pictured below:
Varios +3(e)DOS questions?I'm converting tape games to disk, for being used in my +3e. I'm trying to convert them to standard BASIC loaders, so files could be copied using BAS…
... floppy. I remember that the RAM disk is used as a ... must be +3DOS ROM and RAM 5,2,7. The stack ... disk, I must pass the RAM to be paged and then ... know if it uses the paging routines at 23296 or the ... 48k ROM, RAM 5-2-0 and locking paging mechanism) but when ...ZX Spectrum 48k Issue 2 Faulty Ram?Hi, I have a faulty ZX Spectrum Issue 2 motherboard. Looks in very tidy condition. Though I'm getting random columns of blocks and flashing cursors…
... read would indicate a lower ram failure. I have lightly touched ... seem cool.
The ram fitted is 8322 4116 2N ...4116 Ceramic Ram ChipsHi all, I have a few 4116 Ceramic Ram Chips to sell. If you have any interest, please PM. Greetings, Retrorepair
Hi all,
I have a few 4116 Ceramic Ram Chips to sell.
If you have any interest, please PM.
Greetings,
RetrorepairAnyone got any 4146 RAM chips?Hi I'm looking for some 4164 RAM chips, as would be fitted to a 128k Spectrum (+, +2, +3 I think they all use the same memory). Not out of a 48k mac…
... 'm looking for some 4164 RAM chips, as would be fitted ...Is there an SNA halt bug?Hello all, I noticed that some SNAs don't work on my emulator but they do work in almost everyone else's, SPUD fails with them too which is a tad sp…
... alludes to their being a bug with regard to SNA and ... any reference to such a bug in the SNA specs.Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…
... load/save data into any RAM page (for 128K and above ... to.
- Fixed +3 emulation bug (rotatrix demo now works properly ...Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…
... /> ld a,7 ;ram 7, rom 2
call paging
call paging
ld a,(rombkup ... />
ret
paging:
di
ld bc ... ;select ram 6, rom 3
call pagin ;calls paging
ZX Spectrum upper RAM module (4532/4164 replacement)Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for th…
... zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have ... zx.zigg.net/LRR/"]lower RAM replacement module page[/URL] and ... trailing wires, so the upper RAM module uses almost the same ... as the lower RAM replacement and emulates dynamic RAM.
...Rubber Key RAM - Repair?Hello there everyone! I'm a long-time lurker on here - ROMs, documentation etc. but yesterday I finally ponied up for my own speccy, just like the on…
... />
I carried out the RAM test I found elsewhere on ...Bug in Super Wonder Boy in Monsterland?Hello!:smile: This game seems to have a bug that prevents finalize. The dragon that is in the last level, it is impossible to kill.Remains static.No…
Hello!:smile:
This game seems to have a bug that prevents finalize.
The dragon that is in the last level, it is impossible to kill.Remains static.Not moving.
Has anyone been able to complete this game?
Thanks!!!
